Importance

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Abstract

A palm sized input device for computers comprises a first cursor position sensor which is mounted on the underside and may be operated by a finger, typically the index finger or the middle finger, from the underside of the device (hand held mode); a second cursor position sensor which may be operated by sliding said device along a flat surface with one hand like a conventional mouse (mouse mode); a mode switching means to change the mode between the hand held mode and the mouse mode; at least one means, usually the left click mouse button, to accept the current cursor position; and an alphanumeric keyboard mounted on the top surface. In the preferred embodiment, the top mounted alphanumeric keyboard fully integrates most key functions of a standard QWERTY keyboard by placing the alphanumeric and symbol keys in plurality of circular layers substantially following the geometry of the clock face, i.e., 30 degrees apart angularly.

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First Claim